Sound-modifier for talking-machines.



P. FARB.

SOUND MODIFIER FOR TALKING MACHINES.

APPLICATION HLED FEB.1| 1917.

Patented'lune 25, 1918.

UNITED STATES PATENT OFFICE. Y

PINCUS FARR. F NEWARK, NEW JERSEY, ASSIGNOR TO SONORA PHONOGRAPH CORPO- BATION, A CORPORATION OF NEW YORK.

SOUND-MODIFIED. FOR TALKING-MACHINES.

Specification of Letters latent. Patented J 11116 25, 1918.

Application filed February 1, 1917. Serial 0,145,944.

To all whom it may concern:

Be it known that I, PINCUS FARB, a citizen of the United-States, and a resident of the city of Newark, county of Essex,'and

State of New Jersey, have invented a cersound between the tone-arm and the horn to anydesired extent.

The object of my invention is to provide a device which will be simple and. effective in operation, not likely to get out of order, and will be locked in the desired position.

This and further objects will more fully appear in the following specification and accompanying drawings considered together or separately.

In the drawings,-

Figure l is a top plan view of a talking machme cabinet partly in section, the section being on the line 11 of Fig". 2, em-

bodying my invention;

Fig. 2 is a side elevation partly in section, the section being taken on the line 2-2 of Fig. 1; and

Fig. 3 is a detail sectional view on the line 33 of Fig. 2.

Inall of the above views, like parts are designated by the same reference characters.

In the drawings, 1 designates a cabinet having a motor board 2, to which a motor (not shown) is attached. In one corner of the motor board is an opening provided with a sleeve 3, in which a tone-arm (not shown) is seated. A block 4 is secured in the casing, and has an opening 5 in com" munication with the tone-arm and with a I horn 6.

The block 4 is provided with a slot 7 beneath the motor board, and a panel 8 is car- ,ried in the slot. The panel isp-referably which engage racks 16, 16, carried by the panel 8. The shaft 14 extends outside of the casing, andis provided with a crank 17. The racks 16 are preferably strips of metal having perforations with which the teeth of the pinions engage.

The operation of the device is as follows: By turning the crank 17 in the direction of the opening 5' in the block 4, the panel 8 will be moved to cover the opening 5, and

thereby modify the sound. A turning of the crank 17 in the reverse direction, the

panel 8 will not obstruct the opening 5, but

on the contrary, will open the same to its entire width and permit the sound to emit inits full volume, unmodified.

In accordance with the provisions of the patent statutes, I have described the principle of my invention together with the apparatus which I now consider to represent the best embodiment thereof, but I desire to have it understood that the apparatus shown for the slide, racks, having perforations,

carried by the slide, pinions enga ing the perforations on the racks, the sha t of the pinions extending outside of the casing, and a crank cooperating with the shaft for adjusting the size of the passage.

2. A talking machine, having a passage communicating with an amplifier, a flexible slide for opening and closin the massage, a guide for the slide, a stop for the slide, two parallel racks, having perforations, carried by the slide, two paralled pinions, carried on a shaft having stationary bearings, said pinions engaging the perforations in the racks, the shaft of the pinions extending outside of the casing, and means on the shaft operable from the exterior of the cabinet for opening and closing the passage.

3. A talking machine, having a passage communicating with an amplifier, a slot in said passage, having an opening in one side of the passage, a panel carried in the slot,

. a tray in which the panel rests, communieating with the slot, a stop to limit the outward movement of the panel, parallel racks carried on the tray, parallel pinions engag- -v what ing the racks, and a shaft for the pinions extending outside of the casing for actuating the panel for adjusting the size of the passage.

4. A talking machine, having a passage communicating with an amplifier, a slot in said passage having an opening inside of the passage, a panel composed of fibrous material, carried in the slot, a tray in which the panel rests, rigidly secured to the passage and communicating With the slot, said tray having side Walls and flanges on the side walls engaging the top of the panel, a stop carried at the extremity of the tray to limit the outward movement of the panel,

emme operate the panel for opening and closing the passage.

This specification signed and witnessed this 17th day of January, 1917.

PINCUS FARE.

Witnesses:

WM. VARIN, HERBERT WV. Wmsn. 

